Not without a list of hostnames it's not any use no, if you can get that, then I have something to work with. From looking around on google -n might help here. Once I have this info you'll need to verify that you are able to ssh to these nodes without a password, that pdsh is installed and give me the names of an environment variable that pbs sets for ranks within a job.

I'm sure we can get something working but it might be better to take this off-list or to the padb-users list to avoid spamming the Open-MPI users list.